Probabilistic Operator Algebra Seminar: On maximally amenable subalgebras in free products
Seminar | February 26 | 2-4 p.m. | 736 Evans Hall
Srivatsav Kunnawalkam Elayavalli, UC Berkeley
In a paper of 2014, Cyril Houdayer proved that any diffuse amenable von Neumann algebra can be concretely realized as a maximal amenable subalgebra with expectation inside a full nonamenable III1 factor. Only a year later, Narutaka Ozawa produced a very short proof of this realization (under less general circumstances). In this talk, we shall visit Ozawa's proof.